The A607 Grantham Road at Boothby Graffoe is closed in both directions due to a crash involving a car and a pedestrian.
The collision was reported just before 10.20am on Thursday, March 26 near to the B1202 Heath Lane.
It is affecting traffic between Lincoln and Navenby, as well as through Boothby Greffoe village.
Emergency services, including an ambulance and an air ambulance were sent to the scene.
Lincolnshire Police have been contacted for more information.
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